#425659
Closest named color: Dark Slate Gray (#2F4F4F). oklch(43.8% 0.025 207.6), rgb(66, 86, 89).
Aa
White text reads best on this color (7.75:1).
About this color
#425659 is a dark close to neutral grey. In OKLCH its lightness is 44%, its chroma 0.025. It has too little chroma to lean warm or cool. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.037 away. White text reads best on it, at 7.75:1.
| Hue family | Neutrals |
| Lightness | dark (44%) |
| Chroma | close to neutral grey (0.025) |
| Temperature | neutral |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.70:1 |
| White text | 7.75:1 |
Values
| HEX | #425659 |
| RGB | rgb(66, 86, 89) |
| HSL | hsl(188, 15%, 30%) |
| OKLCH | oklch(43.8% 0.025 207.6) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #425659 | 7.75:1 | AAA | Lc -91.7 | Preferred for body text |
| Black text on #425659 | 2.70:1 | Fails | Lc 17.1 | Dividers and decoration only |
| #425659 text on white | 7.75:1 | AAA | Lc 86.9 | Fine for body text |
| #425659 text on black | 2.70:1 | Fails | Lc -15.2 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 800.
-
Step 50
50
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E7EBEB
oklch(93.7% 0.004 197.1)
-
Step 200
200
#D3DBDC
oklch(88.6% 0.009 205.9)
-
Step 300
300
#B6C3C5
oklch(80.8% 0.015 207.9)
-
Step 400
400
#91A5A8
oklch(70.7% 0.023 207.6)
-
Step 500
500
#758F93
oklch(63.1% 0.03 207.8)
-
Step 600
600
#5D797D
oklch(55.6% 0.033 207.1)
-
Step 700
700
#4D666A
oklch(49.2% 0.03 208.3)
-
Step 800
800 (this color)
#425659
oklch(43.8% 0.025 207.6)
-
Step 900
900
#364547
oklch(37.8% 0.02 206.3)
-
Step 950
950
#20282A
oklch(27% 0.012 214.5)
#425659 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #535459 | 0.025 |
| Deuteranopia (no green cones) | #4F5159 | 0.023 |
| Tritanopia (no blue cones) | #3B5857 | 0.012 |
| Achromatopsia (no color) | #525252 | 0.025 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #425659
#425659
oklch(43.8% 0.025 207.6)
- #5F4D4A
#5F4D4A
oklch(43.8% 0.025 29.2)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #425659, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.037
- YInMn Blue #415A77 ΔE 0.048
- Petrol #005F6A ΔE 0.052
- Dark Green Blue #1F6357 ΔE 0.052
- Deep Teal #00555A ΔE 0.053
- Dusty Grape #545775 ΔE 0.055
- Slate #516572 ΔE 0.060
- Dark Aqua #05696B ΔE 0.065
Use #425659 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.